}

    // Happy path: hasCapability returns based on provided capability codes
    @ParameterizedTest
    @DisplayName("hasCapability returns expected values for various caps")
    @ValueSource(ints = { -1, 0, 1, 1024 })
    void hasCapability_variousCaps(int cap) throws SmbException {
        when(transport.hasCapability(anyInt())).thenAnswer(inv -> ((int) inv.getArgument(0)) >= 0);

    @DisplayName("hasCapability(cap): returns configured value and captures argument across edge caps")
    void hasCapability_variousCaps_returnsTrue_andCapturesArgument(int cap) throws Exception {
        // Arrange: stub to return true regardless of input
        when(handle.hasCapability(anyInt())).thenReturn(true);

        // Act
        boolean result = handle.hasCapability(cap);

    }

    @Test
    @DisplayName("hasCapability delegates and propagates exceptions")
    void hasCapabilityDelegates() throws Exception {
        // Happy path delegates; invalid case propagates SmbException
        when(treeConnection.hasCapability(123)).thenReturn(true);
        assertTrue(handle.hasCapability(123));
        verify(treeConnection).hasCapability(123);

        // Exception path

     * @param cap the capability flag to check
     * @return whether the capability is present
     * @throws CIFSException if an error occurs checking capabilities
     */
    boolean hasCapability(int cap) throws CIFSException;

    /**
     * Gets the send buffer size of the underlying SMB connection
     * @return the send buffer size of the underlying connection

        when(handle.getTree()).thenReturn(tree);
        when(tree.isSMB2()).thenReturn(false);
        when(tree.getConfig()).thenReturn(mock(Configuration.class));
        when(tree.hasCapability(SmbConstants.CAP_NT_SMBS)).thenReturn(true);
        when(handle.getFid()).thenReturn(fid);
        when(tree.send(any(CommonServerMessageBlockRequest.class), any(), any(), any())).thenReturn(resp);
    }

    public void ensureDFSResolved() throws CIFSException {
        this.treeConnection.ensureDFSResolved(this.resourceLoc);
    }

    @Override
    public boolean hasCapability(final int cap) throws SmbException {
        return this.treeConnection.hasCapability(cap);
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.SmbTreeHandle#isConnected()
     */
    @Override
    public boolean isConnected() {

        return statistics;
    }

    // Delegate all SmbTransportInternal methods to the wrapped transport

    @Override
    public boolean hasCapability(int cap) throws SmbException {
        return delegate.hasCapability(cap);
    }

    @Override
    public boolean isDisconnected() {
        return delegate.isDisconnected();
    }

    @Override

            }

            try (SmbFileHandle h = ensureOpen()) {}
            this.readSize = th.getReceiveBufferSize() - 70;
            this.writeSize = th.getSendBufferSize() - 70;

            if (th.hasCapability(SmbConstants.CAP_LARGE_READX)) {
                this.largeReadX = true;
                this.readSize =

     * @throws SmbException
     */
    public boolean hasCapability(final int cap) throws SmbException {
        try (SmbSessionImpl s = getSession()) {
            if (s != null) {
                try (SmbTransportImpl transport = s.getTransport()) {
                    return transport.hasCapability(cap);
                }
            }
            throw new SmbException("Not connected");

        // Act
        Configuration result = trace.getConfig();

        // Assert
        assertSame(cfg, result);
        verify(ctx, times(1)).getConfig();
    }

    @Test
    @DisplayName("hasCapability(): without session/tree throws SmbException")
    void hasCapability_withoutTree_throwsSmbException() {
        // Arrange
        CIFSContext ctx = mock(CIFSContext.class);